Question
Download Solution PDFअतिपरवलय 25x2- 75y2 = 225 की दो नाभियों के बीच की दूरी कितनी है?
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दिया गया है,
अतिपरवलय समीकरण: \(25x^{2} - 75y^{2} = 225\)
मानक रूप प्राप्त करने के लिए दोनों पक्षों को 225 से विभाजित करने पर:
\(\frac{25x^{2}}{225} - \frac{75y^{2}}{225} = 1 \;\Longrightarrow\; \frac{x^{2}}{9} - \frac{y^{2}}{3} = 1\)
इस प्रकार, \(a^{2} = 9\) और \(b^{2} = 3\).
\(c^{2} = a^{2} + b^{2}\) से \(c\) की गणना करें:
\(c^{2} = 9 + 3 = 12 \;\Longrightarrow\; c = \sqrt{12} = 2\sqrt{3}.\)
नाभियाँ \((\pm c,\,0)\) पर हैं, इसलिए उनके बीच की दूरी \(2c\) निम्नवत है:
\(2c = 2 \times 2\sqrt{3} = 4\sqrt{3}.\)
∴ दो नाभियों के बीच की दूरी \(4\sqrt{3}\) इकाई है।
इसलिए, सही उत्तर विकल्प 2 है।
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